Vertical-spindle mounting for woodworking-machines.



No. 853.104. EATENTEI) AMAI 7, 1907.

A MAYEE. VERTICAL SPINDLE MOUNTING EOE WooDWoRKING MACHINES.

APPLICATION FILED DBO.11,1906.

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ADOLPH MAYER, OF WINTON, MINNESOTA.

VERTICAL-SPINDLE MOUNTING FOR WOODWORKlNG-IVIACHINES;

Specification of Letters Patent.

Patented May 7, 1907.

Application filed December ll, 1906. Serial No. 347,240x

j'c a/ZZ whom t muy concern:

Be it known that I, ADOLPH MAYER, a citizen of the United States, and a resident of Winton, in the county of St. Louis and State of Minnesota, have invented a new and Improved Vertical-Spindle Mounting for Woodworking-Machines, of which the following is a full, clear, and exact description.

This invention relates to the mounting of the vertical spindles of woodworking machines, and especially applicable in connection with the mounting of the vertical spindles which carry the cutters used in finishing the edges of lumber, or in cutting matching tongue grooves.

On account o f the pressure which the lumber exerts against the upper portion of the spindles, in practice it is found that the bushings of the upper bearings of the spindles wear much faster than the lower bearings, and it is necessary to constantly re-babbitt or .re-bush them in order to preserve the proper alinement of the spindle, which should always be plumb so that the tongue and groove knives will be fairly presented to the edge of the board.

The object of this invention is to provide means for mounting the spindle which will enable it to be readily adjusted into a vertical position as the bushing becomes worn.

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the side frame which carries the spindle, the lower portion of the frame being represented in cross section; the bar upon which the side frame is mounted is represented in cross section; Fig. 2 is a front elevation of the side frame, the caps of the bearings being represented as removed, and the lower portion of the step bearing being represented in cross section g Fig. 3 is a rear elevation of the side frame g Fig. 4 is a plan of the side frame and its connected parts, certain parts being removed; and Fig. 5 is a cross section taken on the line 5-5 of Fig. 1.

Referring more particularly to the parts, 1 represents the side frame, which has an elongated vertical body connecting an upper head 2 and a lower head 3. The upper head 2 is slidably mounted upon the usual horizontal bar 4 andthis head is provided with clamping devices 5 .for securing the side frame in any suitable position. The head 2 is also provided with side head screws 6 which enable the device to be adjusted to receive lumber of different widths. The upper head 2 is provided on its forwardv side with a recess 7 of substanti ally rectangular form, in which there is mounted a box 8, the same being pivotally supported upon a transverse bolt 9, the ends of which pass through ears 10 which project forwardly from the head, as indicated most clearly in Fig. 4. The rear side of the box 8 tapers toward the front both in an upward and a downward direction, as indicated by the dotted lines 11 and 12. This arrangement enables the box to tilt into any required position upon the axis of the bolt 9. The outer side of the box is closed by a cap 13, and the box, together with the cap, is provided with a suitable bore to receive the spindle 14, and this bore is provided with a bushing 15, of Babbitt or similar material. The cap 13 is held in osition in the usual manner with bolts 16, which are mounted in the outer face of the box, as shown most clearly in Fig. 4. The lower head 3 is likewise provided on its forward face with a recess 17. In this recess there is mounted a box 18, the side faces of which abut against lforwardly projecting ears 19 which are formed in the head 3 at the sides of the recess 17. These ears 19 are provided with longitudinal elongated slots 20, as indicated most clearly in Fig. 1. Throf. gh these slots 2O clamping bolts 21 pass, the bodies of which are mounted in the sides of the box. The rear wall 22 of the box inclines upwardly from the middle point of the box, and also inclines downwardly as shown, so that the box is adapted to tilt upon an axis lying in ahorizontal plane passing through the middle portion thereof. On the rear face of the box a recess 23 is formed, which receives a set screw 24, which is mounted in the rear side of the head and which projects into the recess, as shown.

The lower portion ofthe box 18 is formed into a step bearing 25, having step bushings 26 upon which the lower extremity of the spindle 14 rests. Upon the forward side of the box 18, a cap 27 is attached by means of suitable bolts 28. and the box, together with IOO the cap, is bored and provided with a bushing 29 for the spindle, as will be readily understood.

The Icaps 13 and 27 are formed on their outer-sides into oil cups 30, which are adapted to pass oil to the bearings through suitable openings such as the opening 31 illustrated in Fig. 1.

In order to provide for a vertical adjustment of the step bushings 26, the lower side of the bearing 25 is provided with an upwardly projecting set screw 32.

At a suitable point, the spindle 14 is provided with a belt pulley 33, above which a ily wheel 34 is provided, which enables the spindle to be rotated at a uniform speed.

With a side frame constructed as described and provided with bearings as described, it will be evident that a very nice vertical adjustment ofthe spindle may be effected when desired. In this way, as the wear takes place upon the bushing of the upper bearing, the bolts 16 may be tightened up so as to insure a good iit at this point, and in consequence, displacement of the upper portion of the spindle 14 may be compensated for by an adjustment of the lower box 18. In this connection, it should be understood that the box 18 may be advanced by means of the set screw, and at the same time it may be tilted upon the point of the set screw, so that it may be clamped in any desired position by means of the bolts 21.

Threads are formed on the end of the bolt 9, which engage that ear against which the nut 9by seats; in this way the nut operates as a check-nut to hold the bolt against working loose.

The ears 10 and 19 project beyond the edges of the caps 12 and 27, so that they tend to hold the caps securely in place. In the ears 10 slots 10a are formed,which are curved about the axis of the bolt 9 as a center. Through these slots clamping bolts 10b extend into the side of the box 8, as indicated in Figs. 1 and 2. rIhese bolts afford means for clamping the box in any adjusted angular position' In Fig. 4 these clamping bolts are removed so as to show more clearly the bolt 9. l

Having thus described my invention, I claim as new andv desire to secure by Letters Patent:

1. In a woodworking machine, a side frame having an upper head and a lower head, an upper box pivotally mounted in said upper head, a lower box mounted in said lower head, means for adjusting said lower box near the middle portion thereof, and means for clamping said lower box in said lower head in adjusted positions, said adjusting means being adapted to permit a tilting of said lower box thereupon.

2. In a woodworking machine, a side Jframe having an upper head and a lower head, a box pivotally mounted in said upper head, a lower box mounted in said lower head, adjusting means mounted in said lower head and engaging said lower box, the arrangement being such that said lower box may tilt upon said adjusting means, and means for clamping said lower box in adjusted tilted positions in said lower head.

3. In a woodworking machine, a side frame having an u per head and a lower head, said upper head Lhaving a recess formed therein,

a box pivotally mounted upon a transverse bolt in said recess in said upper head, said lower head having a recess therein, a lower box received in said last recess, a set screw mounted in said lower head and engaging said lower box near the middle portion thereof, said lower box being adapted to tilt upon said set screw, and clam ing bolts for securing said lower box to said lower head in adjusted positions.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ADOLPH MAYER.

Witnesses:

H. L. HAGERMAN, JOHN I. JAcoBsEN. 

